code: def testFreqMagDiffSize(self):
      freqs = [1]
      mags = []
      self.assertComputeFails(Tristimulus(), freqs, mags)
  
file_path: essentia/test/src/unittests/tonal/test_tristimulus.py
imports: from essentia_test import *
label_desc: Use image node_id 6 for calling the TestTristimulus obj's underlying member method code with example usage: obj.testFreqMagDiffSize() without return types